8924. 'Do not fear, for God has come in order to test you' means that the life of heaven will not be destroyed, [but that they are tested] solely so that the existence and essential nature of that life may be known. This is clear from the meaning of 'not fearing' - not fearing that they will die - as their having no fear that the life of heaven with them will be destroyed, 8922; and from the meaning of 'testing you' as teaching about the existence of the life of heaven and about its essential nature. The reason why 'testing' has this meaning is that all spiritual testing or temptation serves to teach about and strengthen such ideas with a person. For temptations exist to this end, that belief in truth and affection for truth may be implanted and enrooted, and after these an affection for good, so that a person receives new life, which is the life of heaven.

[2] Temptations are conflicts with evils and falsities. When a person is victorious in them he is strengthened, for he fights from truths and for truths against falsity and evil. The person is not at the time directly conscious of fighting from truths and for truths because the truths are present on the inner levels of his mind and therefore do not plainly enter his consciousness, which belongs to the outer levels. But truths are indeed what he fights from and fights for, as is evident from the fact that conflict exists, followed by victory, which is not possible except for the clashes of opposites with one another, those opposites being evil and good, and falsity and truth.

[3] Yet it should be recognized that the person does not fight, but that the Lord fights on behalf of the person, and indeed against the hells, which endeavour at that time to take over and subdue the person, 840, 1661, 1692, 8159, 8168, 8172, 8175, 8176.

From all this it is evident that 'Do not fear, for God has come in order to test you' means that there should be no fear that the life of heaven will be destroyed, but that it happens to them so that they may be taught about and know of the existence of the life of heaven, and also its essential nature. But regarding temptations, see what has been stated and shown already in 2272, 2768, 3318, 3927, 3928, 4249, 4299, 4341, 4572, 5036, 5246, 5356, 6144, 6574, 6611, 6657, 6663, 6666, 6829, 8131, 8273, 8351, 8367, 8370 (end), 8403, 8567.

1847. 'For four hundred years' means the duration and state, that is, of the temptations. This is clear from the meaning of 'four hundred', a number which has the same meaning as forty, that is to say, the durations and the states of temptations, dealt with in 730, 862. In the Word the durations of temptations, whether brief or extended, are described by 'forty'. In the literal sense these words have regard to the length of time the sons of Jacob were in Egypt, which, as is clear from Exodus 12:40, was four hundred and thirty years, although this great length of time, as has been noted already, was measured not from the time of Jacob's arrival in Egypt but from the time of Abram's sojourning there. Four hundred and thirty was measured from the latter event because this number embodies the temptations which were represented by their slavery in Egypt, and also after that by the afflictions they endured for forty years in the wilderness.